High frequency induction heating temperature control type capacitor

Abstract

The invention discloses a high-frequency induction heating temperature controlled capacitor, which comprises a shell, an electricity leading-out end and a capacitor core group arranged in the shell, and also includes heat-conducting and flame-proof epoxide resin which is poured in the shell around the capacitor core group. A cooling water channel copper pipe is arranged near the electricity leading-out end in the shell and two ends of the copper pipe are extended out of the shell. The electricity leading-out end and the capacitor core group are connected via a copper belt and a temperature protection switch electrically connected with the copper belt is further arranged on the electricity leading-out end. The temperature controlled capacitor of the invention can not only save the cost butcan shorten water path of the cooling water by arranging the cooling water channel copper pipe on the top of the shell near the electricity leading-out end, thereby allowing heat conducting to be morerapid and effective and the heat elimination effect to be better; and further the temperature protection switch arranged on the electricity leading-out end can prevent the technical drawback of capacitor failure caused by severe heat production.

Description

technical field [0001] The invention relates to a capacitor, in particular to a high-frequency induction heating temperature-controlled capacitor. Background technique [0002] In high-frequency induction heating equipment, the capacitor used for resonance, according to the power level and the actual circuit application, the capacity requirement is between 0.01uF and 2000uF, and the voltage is between 400V and 4000V. Their common characteristics are that they require high frequency, high voltage, large current, large dv / dt, low loss, and fast heat dissipation. [0003] Commonly used high-frequency induction heating capacitors include a shell, electrical leads, and a capacitor core set inside the shell. The shell adopts an oil-filled package with an explosion-proof structure; in terms of heat dissipation, people often fill the entire shell with cooling water channels. surface. The capacitor with the above structure has the following disadvantages: 1), the capacitor adopts a...

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Problems solved by technology

The capacitor with the above structure has the following disadvantages: 1), the capacitor adopts an oil-filled package explosion-proof structure, its manufacturing process is complicated and the volume is large, and it is very inconvenient to install and use; 2), in terms of heat dissipation, the cooling water channel is covered with the entire capacitor The surface of the shell, which not only increases the volume and cost, but also the process is relatively complicated

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